an open top cylindrical container has radius 10 cm and height 30 cm find the cost of painting 20 such cylindrical containers from outside at rupees 105 per metre square.
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an open top cylindrical container has radius 10 cm and height 30 cm find the cost of painting 20 such cylindrical containers from outside at rupees 105 per metre square.
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Answer:
396 is. correct answer
Step-by-step explanation:
c.s.a.= 2πrh
=2×22/7×10×30
=1885.71cm²
area panting 20 cylinder container= 20×1885.71 =37714.28cm²
cost of painting = Rs 396.000001
Step-by-step explanation:
curved surface area =2×22/7×10×30=1885.7cm²
curved surface area of 20 cylinder=1885.7×20=37714cm²
cost =377.14×105=35599.7 ruppes